. Foundations of botany. are fertile. 1 Fucus veslculosus is the most available may be substituted. TYPES OF CRYPTOGAMS; THALLOPHYTES 251. Fig. 184. — Kockweed {Fucus). A, antlieridia borne on branch-ing hairs, x 160; B, anthero-zoids from same, x 330. can be detected. After making themicroscopic examination which follows,note what correspondence of structurewith color has been observed. Cut very-thin sections through fruiting tips fromdifferent plants, keeping those from eachplant separate. Be sure that some ofthe cuts pass through the conceptacle asnear the middle as possible.
. Foundations of botany. are fertile. 1 Fucus veslculosus is the most available may be substituted. TYPES OF CRYPTOGAMS; THALLOPHYTES 251. Fig. 184. — Kockweed {Fucus). A, antlieridia borne on branch-ing hairs, x 160; B, anthero-zoids from same, x 330. can be detected. After making themicroscopic examination which follows,note what correspondence of structurewith color has been observed. Cut very-thin sections through fruiting tips fromdifferent plants, keeping those from eachplant separate. Be sure that some ofthe cuts pass through the conceptacle asnear the middle as possible. Examine with a power of about sixtydiameters sections from different fronds,searching for one kind containing ratherlarge egg-shaped cells and another con-taining bundles of numerous smallersac-shaped cells. With a power of 200diameters study the details of the sec-tions. Xote the character of the cellsforming the surface of the frond, thoseof the inner structm^e, and those limit-ing the cavity of the conceptacle. In aconceptacle cut through the middle notethe form of the orifice. Examine theslender hairs or filaments (^paraphyses)which, arisin
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectplants, bookyear1901
